Originally Posted by JTS97Z28
I personally feel the over heating the fuel pump and condensation in tank causing freezing issues and the car not starting are just myths from the passed. Either that or people just worry about things too much. I have never once experienced any issues like this, never heard of anyone else experiencing these issues, and probably never will hear of anyone having these issues. ~SNIP~
Well, my name is Daniel, nice to meet you...
Seriously though, its been a long time, completely different vehicle (completely different brand) but yes, I once had an overheating fuel pump caused by low fuel...
2000 Grand Am GT just for the record.
I had little money at the time and was VERY bad about driving it down to fumes every single tank.
Had about 30K on it. Had been on the road about 20 minutes, tank was (as usual) below 1/8th... Car died. Acted like I ran out of gas. Thought maybe the fuel gauge was stuck, walked to a gas station a couple miles up the road, bought a gas can and 2 gallons of fuel, returned to pour my 2 gallons in and it fired right up.
Drove to the gas station, filled up and went home.
A week later, it did it again (but with slightly more fuel showing on the gauge). This time I was nowhere near a gas station. I sat waiting on a ride to show up. About 45 mins passed, decided to try it. Sure enough, fired right up. Again, drove 20 minutes, died again.
Bottom line, turned out the fuel pump was overheating. As long as I kept 1/4 tank or more in it, no problems at all, for more than a year and 20K + miles!
Now with all of that said, obviously the pump was bad. I cant say for sure me running it low made it go bad. It could have just been a bad pump.
But I can say for sure that in this case, too low of fuel did make the pump run hotter and eventually overheat so at least with a GM 15 years ago, I do believe there is SOME merit in the pump being cooled by standing fuel...
Final thoughts- At the time I was told by multiple mechanics that my actions of running it low IS what caused it, but I maintained that if that was the case, that was horrible and stupid engineering. It should be built to withstand the practice of filling up rarely..
VERY good chance they ARE built for that today so really, I wouldn't (and don't) worry TOO much about it, though I rarely let it get below 1/8 tank since then.